Automatic scraping device for thermal paste

Abstract

The present invention discloses an automatic scraping device for thermal conductive paste, and relates to the technical field of radiator manufacturing. The device comprises a workbench, a cylinder seat and a limit seat are respectively arranged at both ends of the top surface of the workbench, a heat sink placement groove is arranged on the workbench between the cylinder seat and the limit seat, a push cylinder is embedded in the cylinder seat, a push roller is rotatably arranged on the piston rod of the push cylinder, a U-shaped guide belt is arranged on the cylinder seat, the cylinder seat and the push roller are both located in the U-shaped opening of the U-shaped guide belt, the U-shaped opening of the U-shaped guide belt away from one end of the workbench is movably connected to the cylinder seat above the push cylinder through a buffer connection component, the outer peripheral wall of the push roller conflicts with the bottom of the U-shaped opening of the U-shaped guide belt, a scraping component groove is arranged on the U-shaped opening of the U-shaped guide belt close to one end of the workbench, and a scraping component is movably arranged in the scraping component groove. The present invention has the advantages of being able to adjust the scraping area and improving the scraping quality.

Description

Technical Field

[0001] The invention relates to the technical field of radiator manufacturing, and in particular to an automatic scraping device for thermal conductive paste. Background Art

[0002] Thermal paste is a material used to fill the gap between the CPU and the heat sink, which is also called thermal interface material. Its function is to conduct the heat emitted by the CPU to the heat sink, so that the CPU temperature can be kept at a stable working level, prevent the CPU from being damaged due to poor heat dissipation, and extend its service life.

[0003] At present, most of the thermal paste scraping on the heat sink in the market is done manually, which has low production efficiency and poor quality stability. It is easy to cause waste of thermal paste when the application is uneven, and it will cause thermal paste overflow when it is fitted with the heat dissipation product. There are also mechanical automatic scraping operations, but most scraping mechanisms cannot adjust the scraping area according to the shape of the heat sink, which makes it easy to scrape the thermal paste to the non-scraping area during the scraping operation, reducing the scraping quality, and easily affecting the heat dissipation effect and wasting costs. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the technical problem to be solved by the present invention is to provide an automatic scraping device for thermal paste which can adjust the scraping area and improve the scraping quality.

[0005] In order to solve the above technical problems, the present invention provides an automatic scraping device for thermal conductive paste, comprising a workbench, a cylinder seat and a limit seat are respectively arranged at both ends of the top surface of the workbench, a heat sink placement groove is arranged on the workbench between the cylinder seat and the limit seat, a pushing cylinder is embedded in the cylinder seat, a pushing roller is rotatably arranged on the piston rod of the pushing cylinder, a U-shaped guide belt is arranged on the cylinder seat, the cylinder seat and the pushing roller are both located in the U-shaped opening of the U-shaped guide belt, and the U-shaped opening of the U-shaped guide belt close to one end of the workbench is fixedly arranged on the cylinder seat below the pushing cylinder, and the U-shaped opening of the U-shaped guide belt away from the workbench is passed through The buffer connection component is movably connected to the cylinder seat above the pushing cylinder, the outer peripheral wall of the pushing roller is in conflict with the bottom of the U-shaped opening of the U-shaped guide belt, a scraper assembly groove is provided on the U-shaped opening of the U-shaped guide belt close to the workbench, a scraper assembly is movably provided in the scraper assembly groove, and the scraper assembly is fixedly connected to the piston rod of the pushing cylinder, a feed pipe groove is provided on the U-shaped opening of the U-shaped guide belt away from the workbench, a thermal paste box is also provided on the workbench, a feed pipe is connected to the thermal paste box, and one end of the feed pipe away from the thermal paste box movably passes through the feed pipe groove and is connected with the scraper assembly.

[0006] Preferably, the cylinder seats at both ends of the pushing cylinder are also provided with arc grooves that are adapted to the outer diameter of the pushing roller, and the arc openings of the arc grooves are both facing the pushing roller, so that when the pushing cylinder drives the pushing roller to retract, the two ends of the pushing roller can be respectively located in the arc openings of the two arc grooves, which is beneficial to protecting the pushing roller.

[0007] Preferably, the buffer connection assembly comprises a plurality of guide rods arranged in parallel and at intervals on the U-shaped opening of the U-shaped guide belt away from the workbench. The outer sleeve of the guide rod is provided with a return spring. The two ends of the return spring are respectively fixedly connected to the U-shaped guide belt and the workbench. When the pushing roller is pushed to move under the action of the pushing cylinder, the U-shaped opening of the U-shaped guide belt away from the workbench can stretch the return spring, which is conducive to the extension of the U-shaped opening of the U-shaped guide belt close to the workbench, so as to facilitate the movement of the scraping assembly in the scraping assembly groove to complete the scraping operation.

[0008] Preferably, the scraping assembly includes a scraping box, which is movably arranged in the scraping assembly groove, and the piston rod of the pushing cylinder is fixedly penetrated through the scraping box and rotatably connected with the pushing roller, and a rotating motor is embedded in the top of the scraping box, and a driving gear is fixedly sleeved on the output shaft of the rotating motor, and a rotating shaft is longitudinally rotated in the scraping box, and a driven gear is fixedly sleeved on the upper end of the rotating shaft, and the driven gear is meshed with the driving gear, and a scraping turntable is fixedly sleeved at the lower end of the rotating shaft, and the scraping turntable is rotatably embedded in the bottom surface of the scraping box, and the lower end of the rotating shaft is movably penetrated to the outside of the bottom surface of the scraping box, and a scraper assembly is arranged at the lower end of the rotating shaft, and the end of the feeding pipe away from the thermal conductive paste box movably penetrates the scraping box and the rotating shaft in turn, and is connected with the scraper assembly, and the pushing roller can be pushed to move under the action of the pushing cylinder, thereby driving the scraping box and the scraper assembly to move to complete the scraping operation; the rotating shaft, the scraping turntable and the scraper assembly can also be driven by the rotating motor to move to complete the scraping operation.

[0009] Preferably, the scraper assembly includes a compression spring and a rectangular outer tube sleeve which are sequentially sleeved on the outside of the lower end of the rotating shaft from top to bottom, and the two ends of the compression spring are fixedly connected to the rotating shaft and the rectangular outer tube sleeve respectively, an internal threaded hole is provided at one end of the rectangular outer tube sleeve away from the rotating shaft, and an adjusting bolt is connected to the internal thread of the internal threaded hole, and a scraper seat is fixedly provided on two opposite side walls of the rectangular outer tube sleeve, and the scraper seat is movably embedded in the scraping turntable, and an extended scraper assembly is movably embedded in the end of the scraper seat away from the feed pipe, and a scraper 1 is provided in the middle position of the bottom surface of the scraper seat, and both sides of the scraper 1 A plurality of paste outlets are symmetrically arranged, and the paste outlets are evenly distributed along the length direction of the scraper. Discharge pipes corresponding to the paste outlets are fixedly arranged in the scraper seat, and the discharge pipes are respectively connected with the paste outlets at the corresponding positions, and the ends of the discharge pipes away from the paste outlet are connected with the ends of the feed pipes away from the thermal paste box. The position of the rectangular outer tube sleeve on the scraping turntable can be adjusted by rotating the adjusting bolt, and the scraping operation can be completed by using the scraper assembly alone; or the scraper assembly and the extended scraper assembly can be used simultaneously to complete the scraping operation by adjusting the scraper seat to the outside of the scraping turntable.

[0010] Preferably, the extended scraper assembly includes a storage groove arranged at one end of the scraper seat away from the feed pipe, an extended scraper seat is elastically and slidably arranged in the storage groove, a scraper 2 is arranged on the bottom surface of the extended scraper seat, and a plurality of paste outlets 2 are symmetrically arranged on both sides of the scraper 2. The paste outlets 2 are connected with the discharge pipe close to the end of the extended scraper seat through a corrugated conveying pipe arranged inside the extended scraper seat, so that when the scraper seat is adjusted to the outside of the scraping turntable and the extended scraper seat is extended to the outside of the storage groove, the scraper assembly and the extended scraper assembly can be used simultaneously to complete the scraping operation.

[0011] Preferably, the structures of scraper one and scraper two are the same, and scraper one and scraper two both include a main scraper blade, which is fixedly arranged at the middle position of the bottom surface of the scraper seat or the middle position of the bottom surface of the extended scraper seat, and the end of the main scraper blade away from the scraper seat or the end of the extended scraper seat is a hollow inverted triangle structure, and auxiliary scraper blades are symmetrically arranged on both sides of the extended scraper seat, and anti-overflow plates are arranged on the side walls of the auxiliary scraper blades away from the end of the scraper seat, and an overflow glue groove is formed above the anti-overflow plate, so that when the main scraper blade and the auxiliary scraper blade are scraping, excess thermal paste can flow through the overflow glue groove to the anti-overflow plate for temporary storage.

[0012] Preferably, the width of the U-shaped opening of the U-shaped guide belt is the same as the outer diameter of the push roller, so that when the push roller is moved under the action of the push cylinder, the outer peripheral wall of the push roller can always be in contact with the inner wall of the U-shaped opening of the U-shaped guide belt, which is beneficial to maintaining stability when the U-shaped guide belt is extended and retracted.

[0013] The beneficial effects of the present invention are: 1. The scraping and printing assembly is driven to move by the push cylinder, and the push roller can drive the U-shaped guide belt to move telescopically, thereby completing the scraping and printing operation of heat sinks of different lengths placed in the heat sink placement groove.

[0014] 2. When the area to be scraped is large, the extended scraper assembly can be extended to the outside of the scraper seat, so that the extended scraper assembly and the scraper assembly can be connected to form a larger scraping area; when the area to be scraped is small, the extended scraper assembly can be stored inside the scraper seat, and the scraper assembly can be used alone for scraping operations, so that the effects of different scraping areas can be achieved as needed.

[0015] 3. According to the different shapes (rectangular or circular surfaces) or scraping needs on the heat sink, on the one hand, the scraping operation can be completed by starting the push cylinder to directly drive the scraping assembly to move in a straight line; on the other hand, the scraping operation can be completed by rotating the motor to drive the scraper assembly to rotate (or drive the scraper assembly and the extended scraper assembly to rotate at the same time).

[0016] 4. When the width of the heat sink is wider, the scraper assembly can be adjusted to the outside of the scraping turntable so that the extended scraper assembly extends to the outside of the storage slot, which can increase the length of the scraping on the heat sink and facilitate uniform scraping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of an automatic thermal paste scraping device provided in an embodiment of the present invention.

[0019] Figure 2 A schematic diagram of the structure of a U-shaped guide belt of an automatic thermal paste scraping device provided in an embodiment of the present invention.

[0020] Figure 3 A schematic diagram of the structure of a buffer connection component of an automatic thermal paste scraping device provided in an embodiment of the present invention.

[0021] Figure 4 A schematic structural diagram of a thermal paste automatic scraping device provided in an embodiment of the present invention when the scraping turntable is located outside the scraping box.

[0022] Figure 5A schematic structural diagram of an extended scraper assembly of an automatic scraping device for thermal paste provided in an embodiment of the present invention when the extended scraper assembly is located outside the scraper assembly.

[0023] Figure 6 A schematic diagram of the position of a paste outlet of an automatic thermal paste scraping device provided in an embodiment of the present invention.

[0024] Figure 7 A schematic diagram of the position of the internal threaded holes of an automatic thermal paste scraping device provided in an embodiment of the present invention.

[0025] Figure 8 A schematic structural diagram of an extended scraper assembly of an automatic thermal paste scraping device provided in an embodiment of the present invention.

[0026] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure in the middle.

[0027] Fig.10 A schematic structural diagram of a scraper on a scraper holder of an automatic thermal paste scraping device provided in an embodiment of the present invention.

[0028] Fig.11 A schematic diagram of the connection structure of a feed pipe, a discharge pipe and a corrugated conveying pipe of an automatic thermal paste scraping device provided in an embodiment of the present invention.

[0029] Explanation of the reference numerals: 1. workbench; 11. heat sink placement groove; 12. limit seat; 2. cylinder seat; 21. push cylinder; 211. arc groove; 22. push roller; 23. U-shaped guide belt; 231. feed pipe groove; 3. scraper assembly groove; 4. buffer connection assembly; 41. guide rod; 42. return spring; 5. scraper assembly; 51. scraper box; 52. rotating motor; 521. driving gear; 53. rotating shaft; 54. driven gear; 55. scraper turntable; 6. thermal paste Material box; 61, feeding pipe; 7, scraper assembly; 71, scraper seat; 711, rectangular outer tube sleeve; 7111, internal threaded hole; 712, compression spring; 713, adjusting bolt; 72, scraper one; 73, paste outlet one; 74, discharge pipe; 8, extended scraper assembly; 81, storage slot; 82, extended scraper seat; 83, scraper two; 831, main scraper blade; 832, auxiliary scraper blade; 833, anti-overflow plate; 834, overflow glue channel; 84, paste outlet two; 85, corrugated conveying pipe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1: Figures 1 to 4 , Figure 6 , Fig.10 As shown, the present invention provides an automatic scraping device for thermal conductive paste, including a workbench 1, a cylinder seat 2 and a limit seat 12 are respectively arranged at two ends of the top surface of the workbench 1, a heat sink placement groove 11 is arranged on the workbench 1 between the cylinder seat 2 and the limit seat 12, a pushing cylinder 21 is embedded in the cylinder seat 2, a pushing roller 22 is rotatably arranged on the piston rod of the pushing cylinder 21, a U-shaped guide belt 23 is arranged on the cylinder seat 2, the cylinder seat 2 and the pushing roller 22 are both located in the U-shaped opening of the U-shaped guide belt 23, and the U-shaped opening of the U-shaped guide belt 23 close to one end of the workbench 1 is fixedly arranged on the cylinder seat 2 below the pushing cylinder 21, and the U-shaped opening of the U-shaped guide belt 23 away from the workbench 1 is movably connected to the cylinder seat 2 above the pushing cylinder 21 through a buffer connection component 4, and the outer peripheral wall of the pushing roller 22 is connected to the U-shaped opening of the U-shaped guide belt 23 The bottom of the U-shaped guide belt 23 is in conflict with each other, and a scraping assembly groove 3 is provided on the U-shaped opening at one end of the U-shaped guide belt 23 close to the workbench 1, and a scraping assembly 5 is movably provided in the scraping assembly groove 3, and the scraping assembly 5 is fixedly connected to the piston rod of the pushing cylinder 21, and a feeding pipe groove 231 is provided on the U-shaped opening at the end of the U-shaped guide belt 23 away from the workbench 1. A thermal conductive paste box 6 is also provided on the workbench 1, and a feeding pipe 61 is connected to the thermal conductive paste box 6. The end of the feeding pipe 61 away from the thermal conductive paste box 6 movably passes through the feeding pipe groove 231 and is connected with the scraping assembly 5; the buffer connection assembly 4 includes a plurality of guide rods 41 arranged in parallel and at intervals on the U-shaped opening at one end of the U-shaped guide belt 23 away from the workbench 1, and a return spring 42 is provided on the outer sleeve of the guide rod 41, and the two ends of the return spring 42 are respectively fixedly connected to the U-shaped guide belt 23 and the workbench 1.

[0032] Before the scraping operation, the heat sink to be scraped is first placed in the heat sink placement groove 11, and the pushing cylinder 21 in the cylinder seat 2 is started to push the scraping component 5 to make a linear reciprocating movement in the scraping component groove 3 (move toward the position of the heat sink); at the same time, the pushing roller 22 can move synchronously with the scraping component 5, and at this time, the U-shaped opening of the U-shaped guide belt 23 away from the end of the workbench 1 can stretch or contract the return spring 42 (the guide rod 41 can keep the U-shaped guide belt 23 away from the end of the workbench 1 Moving smoothly), it is beneficial to the U-shaped opening of the U-shaped guide belt 23 close to the end of the workbench 1 to extend or shorten; the thermal conductive paste in the thermal conductive paste box 6 enters the scraping component 5 through the feeding pipe 61, and the thermal conductive paste is discharged while the scraping component 5 moves, and finally the scraping operation is completed through the scraping component 5.

[0033] The scraping assembly groove 3 set on the U-shaped opening at one end of the U-shaped guide belt 23 near the workbench 1 can facilitate the scraping operation when the scraping assembly 5 moves; on the other hand, when the width of the heat sink placement groove 11 is greater than the width of the scraping assembly groove 3 (that is, when the width of the heat sink is greater than the width of the scraping assembly groove 3), when the U-shaped guide belt 23 moves to a position above the heat sink placement groove 11 near one end of the workbench 1, the two ends of the heat sink in the width direction can be pressed, which is beneficial to maintaining the stability of the heat sink position and the accuracy of the scraping position during scraping; after the scraping operation is completed, the push cylinder 21 can be started to drive the scraping assembly 5 to move in a direction away from the limit seat 12, and when the U-shaped guide belt 23 moves to a position that does not correspond to the heat sink placement groove 11, the scraped heat sink can be taken out from the heat sink placement groove 11; multiple heat sinks can also be placed side by side in the heat sink placement groove 11 at one time, and can be taken out again after the scraping is completed in sequence by the scraping assembly 5.

[0034] The feed pipe groove 231 is provided so that the U-shaped guide belt 23 will not interfere with the feed pipe 61 when it moves away from one end of the workbench 1 .

[0035] The cylinder seats 2 at both ends of the pushing cylinder 21 are also provided with arc grooves 211 that are adapted to the outer diameter of the pushing roller 22, and the arc openings of the arc grooves 211 are all facing the pushing roller 22, so that when the pushing cylinder 21 drives the pushing roller 22 to retract, the two ends of the pushing roller 22 can be respectively located in the arc openings of the two arc grooves 211, which is beneficial to protecting the pushing roller 22.

[0036] The width of the U-shaped opening of the U-shaped guide belt 23 is the same as the outer diameter of the push roller 22, so that when the push roller 22 is pushed to move under the action of the push cylinder 21, the outer peripheral wall of the push roller 22 can always be in contact with the inner wall of the U-shaped opening of the U-shaped guide belt 23, which is beneficial to maintaining stability when the U-shaped guide belt 23 is extended or retracted.

[0037] A gasket of corresponding thickness can be made on the bottom surface of the heat sink placement groove 11 according to the thickness of the heat sink, so that when the scraper seat 71 is adjusted to the outside of the scraping turntable 55 and the extended scraper seat 82 is extended to the outside of the storage groove 81, the scraper assembly 7 and the extended scraper assembly 8 can be used simultaneously to complete the scraping operation on the heat sink.

[0038] Embodiment 2: Figure 1 to Figure 2 , Figures 4 to 7 , Figure 10 to Figure 11 As shown, on the basis of the first embodiment, the scraping and printing assembly 5 includes a scraping and printing box 51, which is movably arranged in the scraping and printing assembly groove 3, and the piston rod of the push cylinder 21 is fixedly penetrated through the scraping and printing box 51 and is rotatably connected with the push roller 22. A rotating motor 52 is embedded on the top of the scraping and printing box 51, and a driving gear 521 is fixedly sleeved on the output shaft of the rotating motor 52. A rotating shaft 53 is longitudinally rotatably arranged in the scraping and printing box 51, and a driven gear 54 is fixedly sleeved on the upper end of the rotating shaft 53, and the driven gear 54 is connected to the driving gear 521. The gears 521 are meshed, and a scraping turntable 55 is fixedly sleeved on the lower end of the rotating shaft 53, and the scraping turntable 55 is rotatably embedded in the bottom surface of the scraping box 51. The lower end of the rotating shaft 53 moves through the outside of the bottom surface of the scraping box 51. A scraper assembly 7 is arranged at the lower end of the rotating shaft 53. The end of the feed pipe 61 away from the thermal paste box 6 moves through the scraping box 51 and the rotating shaft 53 in turn, and is connected to the scraper assembly 7; the scraper assembly 7 includes a compression spring that is sleeved on the outside of the lower end of the rotating shaft 53 from top to bottom. 712 and a rectangular outer tube sleeve 711, and the two ends of the compression spring 712 are fixedly connected to the rotating shaft 53 and the rectangular outer tube sleeve 711 respectively, and the end of the rectangular outer tube sleeve 711 away from the rotating shaft 53 is provided with an internal threaded hole 7111, and the internal threaded hole 7111 is connected with an adjusting bolt 713, and the two opposite side walls of the rectangular outer tube sleeve 711 are fixedly provided with a scraper seat 71, and the scraper seat 71 is movably embedded in the scraping rotating disk 55, and the end of the scraper seat 71 away from the feeding tube 61 is movably embedded in the inner An extended scraper assembly 8 is provided, and a scraper 72 is provided at the middle position of the bottom surface of the scraper seat 71. A plurality of paste outlets 73 are symmetrically provided on both sides of the scraper 72. The paste outlets 73 are evenly distributed along the length direction of the scraper 72. Discharge pipes 74 corresponding to the paste outlets 73 are fixedly provided in the scraper seat 71. The discharge pipes 74 are respectively connected with the paste outlets 73 at the corresponding positions, and the ends of the discharge pipes 74 away from the paste outlet 73 are connected with the end of the supply pipe 61 away from the thermal paste box 6.

[0039] When a rectangular shape needs to be scraped on the heat sink (at this time, the extended scraper assembly 8 is located in the storage groove 81, and the scraper assembly 7 is located in the scraping turntable 55), the pushing cylinder 21 can be started at this time, and the pushing cylinder 21 can push the pushing roller 22 to reciprocate in the scraping assembly groove 3 (because the piston rod of the pushing cylinder 21 is fixedly passed through the scraping box 51 and is rotatably connected to the pushing roller 22, the pushing cylinder 21 can also keep the pushing roller 22 moving and rotating simultaneously when pushing the scraping assembly 5 to move), thereby driving the scraping box 51 and the scraper assembly 7 to move, and the thermal paste passes from the thermal paste box 6 through the feed pipe 61 and enters the discharge pipe 74, and then the discharge is completed from the paste outlet 73. Under the action of the movement of the scraper assembly 7, the scraping operation can be completed by the scraper 72 at the same time.

[0040] When a circular shape needs to be scraped on the heat sink, first loosen the adjusting bolt 713 by turning in the internal threaded hole 7111, and the rectangular outer tube sleeve 711 can be moved outside the lower end of the rotating shaft 53 in a direction away from the scraping turntable 55 under the action of the compression spring 712. At this time, the scraper assembly 7 can be located outside the scraping turntable 55. (According to the diameter of the circular shape to be scraped, it can be selected whether to pull out the extended scraper assembly 8 from the end of the scraper seat 71 away from the feed pipe 61 for use. The extended scraper assembly 8 can be connected to the scraper seat 71 by a movably connected manner such as bolts. On the scraper assembly 7, when the extended scraper assembly 8 is not used to complete the circular scraping, the extended scraper assembly 8 will not pop out from the two ends of the scraper seat 71), start the pushing cylinder 21 to push the scraping box 51 to the position corresponding to the upper and lower positions of the heat sink, and then start the rotating motor 52 to drive the active gear 521 to rotate, thereby driving the driven gear 54 and the rotating shaft 53 to rotate, and the scraper assembly 7 can be driven to rotate clockwise and counterclockwise. At the same time, the scraping operation is completed under the action of the paste outlet 73 discharging the material (the discharge path is the same as when scraping a rectangular shape).

[0041] The piston rod of the pushing cylinder 21 is fixedly passed through the scraping box 51 and is rotatably connected to the pushing roller 22. A rotating ring is rotatably sleeved at the middle position of the pushing roller 22, so that the piston rod of the pushing cylinder 21 is fixedly connected to the rotating ring, thereby ensuring that the pushing roller 22 can achieve linear movement and rotation at the same time, thereby facilitating the length change of the U-shaped guide belt 23 close to one end of the workbench 1 under the action of the pushing cylinder 21.

[0042] Embodiment 3: Figure 1 , Figures 5 to 11As shown, on the basis of the first embodiment, the extended scraper assembly 8 includes a receiving groove 81 arranged at one end of the scraper seat 71 away from the feed pipe 61, and an extended scraper seat 82 is elastically slidably arranged in the receiving groove 81, and a second scraper 83 is arranged on the bottom surface of the extended scraper seat 82, and a plurality of second paste outlets 84 are symmetrically arranged on both sides of the second scraper 83, and the second paste outlet 84 is connected to the discharge pipe 74 near the end of the extended scraper seat 82 through a corrugated conveying pipe 85 arranged inside the extended scraper seat 82; the structure of the first scraper 72 is the same as that of the second scraper 83, and the scraper Both scraper one 72 and scraper two 83 include a main scraper blade 831, which is fixedly arranged at the middle position of the bottom surface of the scraper seat 71 or the middle position of the bottom surface of the extended scraper seat 82. The end of the main scraper blade 831 away from the scraper seat 71 or the end of the extended scraper seat 82 is a hollow inverted triangle structure, and auxiliary scraper blades 832 are symmetrically arranged on both sides of the extended scraper seat 82. An anti-overflow plate 833 is arranged on the side wall of the auxiliary scraper blade 832 away from the end of the scraper seat 71, and an overflow glue groove 834 begins to be formed above the anti-overflow plate 833.

[0043] When the scraper seat 71 is adjusted to the outside of the scraping turntable 55, and the extended scraper seat 82 is extended to the outside of the storage groove 81 (at this time, the bottom surface of the scraper seat 71 and the bottom surface of the extended scraper seat 82 are on the same plane); the scraper seat 71 and the extended scraper seat 82 can be pushed by the pushing cylinder 21 (reciprocating linear movement), so that the scraper 1 72 and the scraper 2 83 can scrape the thermal paste on the heat sink at the same time (at this time, the auxiliary scraper blade 832 is away from the end of the scraper seat 71 and does not contact the thermal paste on the heat sink), so that the thermal paste on the heat sink is scraped and printed. It is rectangular in shape; the scraper seat 71 and the extended scraper seat 82 can also reciprocate around the rotating shaft 53 under the action of the rotating motor 52 (that is, the scraper seat 71 and the extended scraper seat 82 reciprocate clockwise and counterclockwise at the same time), so as to complete the scraping of the thermal paste on the heat sink, so that the thermal paste on the heat sink is circular after scraping; the setting of the corrugated conveying tube 85 makes it easy for the extended scraper seat 82 to extend to the outside of the storage groove 81 without affecting the thermal paste passing through the feed pipe 61 and the discharge pipe 74 in sequence, and then completing the discharge from the paste outlet 84.

[0044] During the scraping process of the scraper seat 71 and the extended scraper seat 82, when a large amount of thermal paste is discharged from the paste outlet 1 73 and the paste outlet 2 84, the auxiliary scraper blade 832, at one end away from the scraper seat 71, contacts the thermal paste on the heat sink, so that excess thermal paste can pass through the overflow groove 834 and enter the anti-overflow plate 833 for storage, thereby reducing or avoiding the overflow of thermal paste on the heat sink. After the scraping is completed, the excess thermal paste stored on the anti-overflow plate 833 can be processed; a groove body can also be provided on the anti-overflow plate 833 to facilitate the storage of excess thermal paste passing through the overflow groove 834.

[0045] In order to improve the stability of the extension and retraction of the extended scraper seat 82 in the receiving groove 81, a guide rod can be provided in the receiving groove 81 so that the extended scraper seat 82 can be slidably set on the guide rod; at the same time, a spring can be sleeved on the outside of the guide rod so that the two ends of the spring are respectively connected to the extended scraper seat 82 and the receiving groove 81.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic scraping device for thermal paste, characterized in that: The workbench (1) comprises a workbench (1), wherein two ends of the top surface of the workbench (1) are respectively provided with a cylinder seat (2) and a limit seat (12), a heat sink placement groove (11) is provided on the workbench (1) between the cylinder seat (2) and the limit seat (12), a push cylinder (21) is embedded in the cylinder seat (2), a push roller (22) is rotatably provided on the piston rod of the push cylinder (21), a U-shaped guide belt (23) is provided on the cylinder seat (2), the cylinder seat (2) and the push roller (22) are both located in a U-shaped opening of the U-shaped guide belt (23), and the U-shaped opening of the U-shaped guide belt (23) close to one end of the workbench (1) is fixedly provided on the cylinder seat (2) below the push cylinder (21), and the U-shaped opening of the U-shaped guide belt (23) away from the workbench (1) is movably connected via a buffer connection component (4). On the cylinder seat (2) above the pushing cylinder (21), the outer peripheral wall of the pushing roller (22) is in conflict with the bottom of the U-shaped opening of the U-shaped guide belt (23), a scraper assembly groove (3) is provided on the U-shaped opening at one end of the U-shaped guide belt (23) close to the workbench (1), a scraper assembly (5) is movably provided in the scraper assembly groove (3), and the scraper assembly (5) is fixedly connected to the piston rod of the pushing cylinder (21), a feed pipe groove (231) is provided on the U-shaped opening at one end of the U-shaped guide belt (23) away from the workbench (1), a thermal paste box (6) is also provided on the workbench (1), a feed pipe (61) is connected to the thermal paste box (6), and the end of the feed pipe (61) away from the thermal paste box (6) movably passes through the feed pipe groove (231) and is connected to the scraper assembly (5); The scraper printing assembly (5) comprises a scraper printing box (51), the scraper printing box (51) is movably arranged in the scraper printing assembly groove (3), the piston rod of the push cylinder (21) is fixedly penetrated through the scraper printing box (51) and is rotatably connected to the push roller (22), a rotating motor (52) is embedded in the top of the scraper printing box (51), a driving gear (521) is fixedly sleeved on the output shaft of the rotating motor (52), a rotating shaft (53) is longitudinally rotatably arranged in the scraper printing box (51), and a driven gear (54) is fixedly sleeved on the upper end of the rotating shaft (53), The movable gear (54) is meshed with the driving gear (521); a scraping turntable (55) is fixedly sleeved on the lower end of the rotating shaft (53); the scraping turntable (55) is rotatably embedded in the bottom surface of the scraping box (51); the lower end of the rotating shaft (53) is movably penetrated to the outside of the bottom surface of the scraping box (51); a scraper assembly (7) is arranged at the lower end of the rotating shaft (53); and one end of the feed pipe (61) away from the thermal paste box (6) is movably penetrated through the scraping box (51) and the rotating shaft (53) in sequence, and is communicated with the scraper assembly (7).

2. The automatic scraping device for thermal paste according to claim 1, characterized in that: The cylinder seats (2) at both ends of the pushing cylinder (21) are also provided with arc-shaped grooves (211) matching the outer diameter of the pushing roller (22), and the arc-shaped openings of the arc-shaped grooves (211) are both facing the pushing roller (22).

3. The automatic scraping device for thermal paste according to claim 1, characterized in that: The buffer connection assembly (4) comprises a plurality of guide rods (41) arranged in parallel and at intervals on a U-shaped opening at one end of the U-shaped guide belt (23) away from the workbench (1); a return spring (42) is sleeved on the outside of the guide rods (41); and two ends of the return spring (42) are fixedly connected to the U-shaped guide belt (23) and the workbench (1), respectively.

4. The automatic scraping device for thermal paste according to claim 3, characterized in that: The scraper assembly (7) comprises a compression spring (712) and a rectangular outer tube sleeve (711) which are sequentially sleeved on the outside of the lower end of the rotating shaft (53) from top to bottom, and the two ends of the compression spring (712) are fixedly connected to the rotating shaft (53) and the rectangular outer tube sleeve (711) respectively. An internal threaded hole (7111) is provided at one end of the rectangular outer tube sleeve (711) away from the rotating shaft (53). An adjusting bolt (713) is connected to the internal thread of the internal threaded hole (7111). A scraper seat (71) is fixedly provided on two opposite side walls of the rectangular outer tube sleeve (711). The scraper seat (71) is movably embedded in the scraping rotating disk (55). The scraper seat (71) An extended scraper assembly (8) is movably embedded in the end away from the feed pipe (61), a scraper 1 (72) is arranged at the middle position of the bottom surface of the scraper seat (71), and a plurality of paste outlets 1 (73) are symmetrically arranged on both sides of the scraper 1 (72), and the paste outlets 1 (73) are evenly distributed along the length direction of the scraper 1 (72). Discharge pipes (74) corresponding to the paste outlets 1 (73) are fixedly arranged in the scraper seat (71), and the discharge pipes (74) are respectively connected to the paste outlets 1 (73) at the corresponding positions, and the ends of the discharge pipes (74) away from the paste outlet 1 (73) are connected to the end of the feed pipe (61) away from the thermal paste material box (6).

5. The automatic scraping device for thermal paste according to claim 4, characterized in that: The extended scraper assembly (8) comprises a receiving groove (81) arranged at one end of the scraper seat (71) away from the feed pipe (61), an extended scraper seat (82) being elastically slidably arranged in the receiving groove (81), a second scraper (83) being arranged on the bottom surface of the extended scraper seat (82), a plurality of second paste outlets (84) being symmetrically arranged on both sides of the second scraper (83), and the second paste outlets (84) being connected to the discharge pipe (74) near the end of the extended scraper seat (82) via a corrugated conveying pipe (85) arranged inside the extended scraper seat (82).

6. The automatic scraping device for thermal paste according to claim 5, characterized in that: The structures of the scraper blade 1 (72) and the scraper blade 2 (83) are the same. The scraper blade 1 (72) and the scraper blade 2 (83) both include a main scraper blade (831). The main scraper blade (831) is fixedly arranged at the middle position of the bottom surface of the scraper seat (71) or the middle position of the bottom surface of the extended scraper seat (82). The end of the main scraper blade (831) away from the scraper seat (71) or the end of the extended scraper seat (82) is a hollow inverted triangle structure. Auxiliary scraper blades (832) are symmetrically arranged on both sides of the extended scraper seat (82). An anti-overflow plate (833) is arranged on the side wall of the end of the auxiliary scraper blade (832) away from the scraper seat (71). An overflow glue groove (834) begins above the anti-overflow plate (833).

7. The automatic scraping device for thermal paste according to claim 1, characterized in that: The width of the U-shaped guide belt (23) in the U-shaped opening is the same as the outer diameter of the push roller (22).

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